Author/Authors :
Araoyinbo, Alaba O. Universiti Sains Malaysia - School of Materials and Mineral Resources Engineering, Malaysia , Ahmad Fauzi, M.N. Universiti Sains Malaysia - School of Materials and Mineral Resources Engineering, Malaysia , Sreekantatan, Srimala Universiti Sains Malaysia - School of Materials and Mineral Resources Engineering, Malaysia , AZIZAN, Aziz Universiti Sains Malaysia - School of Materials and Mineral Resources Engineering, Malaysia
Abstract :
The formation of nano pores on aluminum at 30oC- 38oC, employing a one step anodization technique which does not require removing the oxide layer formed is presented. A 20% phosphoric acid electrolyte (concentration higher than the normal anodization concentration of 5 to 10%) at a cell potential of 60 volts was used. A platinum electrode was used as the cathode electrode while the aluminum substrate as the anode electrode. A dc powered electrochemical cell to provide the required amount of current density (without the use of temperature controlled water bath) suitable or necessary for pore formation at room temperature was employed. The results obtained show that pore formation at room temperature is achievable and the pore diameter ranged between 80-120 nm.
Keywords :
Aluminum , electrochemical cell , electrolyte , nano pores
